A number of under-the-hood improvements added to the third beta version of iPhone OS 3.1 have been revealed. Notably, the new beta supports failover support for HTTP live streaming, allowing content providers to queue up multiple media playlists, automatically switching over to a secondary stream in the event that the first one fails to load.
Other improvements include enhanced support for Bluetooth audio recording in third-party applications, and the ability to perform offline audio conversion to AAC on the iPhone. As noted previously, additional functions have also been added to the iPhone OS's APIs to allow for customized interactions with the camera, including those seen in augmented reality applications.
The new iPhone OS beta also runs somewhat faster than its predecessor.
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